Aquarium clock



FIG. 1 is a top, front perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a rear view of the present invention;

FIG. 4 is a left-hand side view of the present invention;

FIG. 5 is a right-hand side view of the present invention;

FIG. 6 is a top view of the present invention; and,

FIG. 7 is a bottom view of the present invention.

The portions of the Figures depicted by broken lines represent the environment of the invention and have been shown for illustrative purposes only. The broken lines do not form part of the claimed design. 

The ornamental design for an aquarium clock, as shown and described. 